American Experience

Tunneling the East River

Clip: Season 26 Episode 5 | 2m 17s

The East River flowed over a mix of gravel, clay, sand, silt and bedrock. When sandhogs hit pockets of sand and gravel, there was a risk of air leaking from the tunnels. Workers were constantly on the alert for a whistling sound—a sign that compressed air was escaping and might at any moment punch a hole through the riverbed, known as a blowout. These blowouts were costly and often deadly.

Aired: 02/18/14

Rating: NR

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